Electrical generators produce not only electricity but they also produce heat from friction losses in the bearings and from conductor resistance in the core and windings. Adequate heat removal is not only essential to allow for the generator to meet capacity but is also critical in maintaining the remaining operating life of the generator, or in some case (with proper analysis) increase generator output. Motors that generate large electrical losses in the form of heat are required to be cooled. Often these motors are cooled by using ambient air but in an environment where the available cooling air temperature is high and / or the application is dusty, ambient air may not be the most suitable way to cool a motor. In these applications, Totally Enclosed Water Cooled (TEWAC) Motors are used where the motor air is circulated over a water cooled heat exchanger.
